CN106699593B - A kind of rosin derivative and its preparation method and application - Google Patents
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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Abstract
The present invention provides a kind of rosin derivative and its preparation method and application.Wherein rosin derivative is reacted to obtain by rosin acid and dendroid oligomer, obtained rosin derivative can improve color lake class, diphenyl amine, phthalocyanine pigment offset printing system rheological property, coloured light is not influenced, while the dispersion performance of organic pigment can be improved to a certain degree again.Therefore, rosin derivative provided by the invention can be as the dispersant of organic pigment used for offset ink.
Description
Technical field
The present invention relates to a kind of compound, more particularly to a kind of rosin derivative.
The invention further relates to a kind of preparation method of compound, more particularly to a kind of preparation method of rosin derivative.
The invention further relates to a kind of purposes of compound, more particularly to a kind of purposes of rosin derivative.
Background technology
Printing ink is made of binder, pigment and its auxiliary agent.Grinding distribution process in Printing ink producing is exactly to make pigment
It is scattered in superfine small particle form in link stuff.The process is process that is most important in Printing ink producing and most consuming energy.
Improve pigment dispersiveness and reduce viscosity, improve pigment loading be organic pigment pursue all the time, most important target
One of.
Rosin is a kind of abundance, cheap natural industrial chemicals.Largely rosin is used in offset printing ink
Modified resin as its binder, therefore using have with modified rosin resin the rosin of affinity and its derivative as surface coat
Agent processing organic pigment is one of most classical pigment treatment process, is just applied in azo pigments production early in nineteen twenty, extremely
Modern still a large amount of uses.Its main function improves compatibility between organic pigment and binder, makes organic pigment in link stuff
It is easily dispersed, reduces viscosity, improve loading of the pigment in link stuff, improve scattered grinding efficiency, control crystalline pigment grain
The growth of son, reduces the aggtegation of the granules of pigments in drying and process of lapping, so as to reduce pigment particle size, reaches high transparency
Degree and tinting strength, tinting power.
, can also be main by modifying its active group in addition to rosin resin is directly used in coated pigment particle
If carboxyl, a series of rosin derivative is synthesized, is used as emulsifying agent, detergent, corrosion inhibiter, demulsifier, thinner etc..
Since rosin is natural products, generally there is preferable ecological performance using its derivative as skeleton, meet " raw material greenization "
It is required that therefore, having done substantial amounts of work in this respect both at home and abroad, many New-type adjuvants are synthesized, partly available for pigment art.
Early in 1997, Song Zhanqian etc. (Chinese invention patent specification CN1203253A) reported a kind of abietyl polyoxy
The synthetic method of ethene ether sulfosuccinic monoester disodium salt, including three ethoxylation, esterification, addition reaction steps
Suddenly, the product reported is a kind of anion surfactant, can be applied in pigment field of dispersions.
Clariant Co., Ltd (CN1491261A) reports a kind of diaryl yellow pigment preparations, wherein including a kind of pine
Fragrant derivative, the derivant structure are made of abietyl, maleic acid and amine salt etc., and the pigment preparation of gained has high flowing
Degree, high viscosity and good color, print ink suitable for preparing, are particularly suitable for preparing offset printing ink.
Chinese invention patent specification CN103450809A discloses a kind of system of the rosin derivative for pigment industry
Preparation Method, it is characterised in that its preparation process is：0.1%~1.0% alkylbenzene for accounting for rosin gross mass is added in rosin
Phenol disulphide carries out disproportionated reaction, and reaction temperature is 260 DEG C~280 DEG C, when the reaction time is 2~6 small；Drop after reaction
Temperature, 0.3%~1.0% tannic acid for accounting for rosin gross mass is added at 160 DEG C~200 DEG C, when stirring reaction 1~3 is small, is gone out
Material, obtains this rosin derivative.The rosin derivative can improve pigmenting power, there is the transparency of higher, also have it is natural,
The characteristics of green, environmental protection, be particularly suitable for manufacturing the benzidine yellow pigment of high additive amount.
The content of the invention
The technical problem to be solved in the present invention is a kind of novel rosin derivative of structure of offer, obtained rosin derivative
Color lake class, diphenyl amine, phthalocyanine pigment can be improved in the rheological property of offset printing system, do not influence coloured light, while another determine journey
Degree improves the dispersion performance of organic pigment.
In order to solve the above technical problems, the technical solution that the present invention takes is：A kind of rosin derivative, the rosin derivative
Thing is compound shown in Formulas I：
Compared with prior art, the present invention the rosin derivative of the present invention can improve color lake class, diphenyl amine, phthalocyanines face
Expect the rheological property in offset printing system, do not influence coloured light, while the dispersion performance of organic pigment can be improved to a certain degree again.Cause
This, rosin derivative provided by the invention can be as the dispersant of organic pigment used for offset ink.
The present invention also provides a kind of method for preparing above-mentioned rosin derivative, comprise the following steps：
(1) purification of dehydroabietic acid：Technical grade disproportionated rosin is dissolved in absolute ethyl alcohol, ethanol is slowly added dropwise at 75 DEG C
Amine, is stirred 30 minutes, is added hot water and is stirred for 10 minutes；Impurity is washed away with low polar solvent, in triplicate, water layer has after standing
Solid separates out, and filtering, dries at 60 DEG C, obtain dehydroabietic acid ethanolamine salt；It is water-soluble that product is dissolved in 60 DEG C of 75% ethanol
Liquid, is slowly added dropwise dilute hydrochloric acid to pH=3-4, filtering, is recrystallized 2 times with 50% ethanol water, dry, taken off at 60 DEG C
Hydrogen abietic acid product；
Wherein, monoethanolamine:Disproportionated rosin (mass ratio)=1:4‐6；
The low polar solvent is n-hexane, normal heptane or petroleum ether；
The dilute hydrochloric acid concentration is 5-15%；
(2) chloride：Product obtained by step (1) is dissolved in dichloromethane, thionyl chloride is slowly added dropwise under ice-water bath, then
Add 1 drop catalyst, when back flow reaction 2-4 is small, revolving removes solvent and excessive thionyl chloride, obtains chloride dehydroabietic；
Wherein, thionyl chloride:Dehydroabietic acid (molar ratio)=1.5-4:1；
The catalyst is N,N-dimethylformamide；
(3) Michael addition reactions：Ethylenediamine is dissolved in methanol, methyl acrylate is added, reacts 24- at room temperature
48 it is small when, revolving removes solvent and excessive methyl acrylate, obtains product G0.5, sees Formula II：
Wherein, ethylenediamine:Methanol (mass ratio)=1:5‐20；
Ethylenediamine:Methyl acrylate (molar ratio)=1:6‐10；
(4) amidation process：Product obtained by step (3) is dissolved in methanol, ethylenediamine is added, reacts 72- at room temperature
96 it is small when, revolving remove solvent, add azeotropic solvent remove ethylenediamine, obtain product G1.0, see formula III：
Wherein, G0.5:Methanol (mass ratio)=1:5‐20；
G0.5:Ethylenediamine (molar ratio)=1:6‐10；
The azeotropic solvent is normal heptane or toluene；
(5) secondary amidation process：Product G1.0 is dissolved in dichloromethane, adds triethylamine, chloride dehydroabietic is molten
In dichloromethane, slowly it is added dropwise under ice-water bath in reaction bulb, when back flow reaction 3-5 is small, revolving removes solvent, adds distilled water
And be extracted with ethyl acetate 2 times, merge organic phase, with desiccant dryness, rotate to obtain crude product, with chromatography post separation, obtain described
Rosin derivative；
Wherein, G1.0:Triethylamine (molar ratio)=1:1.4‐2；
The eluant, eluent chromatographed used in post separation is dichloromethane:Ethanol=30-15:1.
One kind as above-mentioned technical proposal is improved, wherein in step (2), thionyl chloride:Dehydroabietic acid (molar ratio)
For 2-3:1.
One kind as above-mentioned technical proposal is improved, wherein in step (3), ethylenediamine:Methyl acrylate (molar ratio)
For 1:7‐9.
One kind as above-mentioned technical proposal is improved, wherein in step (4), G0.5:Ethylenediamine (molar ratio) is 1:7‐
9。
One kind as above-mentioned technical proposal is improved, wherein in step (5), G1.0:Triethylamine (molar ratio) is 1:
1.4‐1.6。
One kind as above-mentioned technical proposal is improved, wherein in step (5), the drier is anhydrous sodium sulfate or nothing
Water magnesium sulfate.
One kind as above-mentioned technical proposal is improved, wherein in step (5), the eluant, eluent used in the chromatography post separation
For dichloromethane:Ethanol=25-20:1.
The present invention also provides a kind of purposes of above-mentioned rosin derivative as organic pigment dispersant used for offset ink.
One kind as above-mentioned technical proposal is improved, wherein the rosin derivative dosage is the 0-8% of pigment weight, it is excellent
Elect 1-5% as, be most preferably 1-2%, the pigment of the rosin derivative addition is used for offset printing ink system.
Embodiment
Embodiment：Below by embodiment, the present invention is further elaborated, and its object is to be best understood from this
The content of invention, therefore, the cited case does not limit present disclosure.
Embodiment 1：The preparation of rosin derivative
(1) purification of dehydroabietic acid
200g industry disproportionated rosins are dissolved in 400mL absolute ethyl alcohols, heating water bath is slowly instilled to 75 DEG C, with dropper
41.8mL monoethanolamines, stir 30min.400mL hot water is added, continues to stir 10min.Impurity is washed away with 150mL petroleum ethers, is repeated
Extraction 3 times, water layer, which is stood, solid precipitation, filters, and is dried at 60 DEG C, obtains dehydroabietic acid monoethanolamine.Measure 75% second of 500mL
Alcoholic solution, is heated to 60 DEG C, adds dehydroabietic acid monoethanolamine, stirring and dissolving, is slowly added dropwise dilute hydrochloric acid to PH=4, filters, use
50% ethanol solution is dried at recrystallizing 2 times, 60 DEG C, obtains dehydroabietic acid, yield 40%.
1H NMR(400M CDCl3):δ(ppm)7.17‐7.15(d,1H),7.01‐6.98(dd,1H),6.88(d,1H),
2.94‐2.88(m,2H),2.85‐2.79(m,1H),2.32‐2.22(m,2H),1.89‐1.70(m,6H),1.60‐1.51(m,
2H),1.28(s,3H),1.23‐1.20(m,9H).
(2) acyl chloride reaction
6.0g dehydroabietic acids are dissolved in 50mL dichloromethane, add a drop n,N-Dimethylformamide as catalyst, frozen water
2.4g SOCl are slowly added dropwise under bath2, ice-water bath is removed, is heated to reflux 2h.Revolving removes solvent and excess SOCl2, obtain dehydrogenation fir
Isoxazolecarboxylic acid, yield 99%.
(3) Michael addition reactions
3.0g ethylenediamines are dissolved in 30mL methanol, 34.5g methyl acrylates is added, reacts 24h at room temperature, revolving is removed
Solvent and excessive methyl acrylate are removed, product G0.5 is obtained, sees Formula II, yield 98%.
1H NMR(400M CDCl3):δ(ppm)3.67(s,12H),2.79‐2.75(t,8H),2.50(s,4H),2.46‐
2.42(t,8H)。
(4) amidation process
10g G0.5 are dissolved in 50mL methanol, add 11.88g ethylenediamines, react at room temperature 72h, revolving removes solvent, uses
10mL normal heptanes are azeotroped off unnecessary ethylenediamine, are repeated 3 times, and obtain G1.0, see formula III, yield 100%.
1H NMR(400M DMSO‐D6):δ(ppm)3.19‐3.02(m,24H),2.64‐2.60(m,8H),2.41(d,
4H),2.19(t,8H)。
(5) secondary amidation process
4.0g G1.0 are dissolved in 20mL dichloromethane, add 4.7g triethylamines.9.89g chloride dehydroabietics are taken to be dissolved in
20mL dichloromethane, is slowly added dropwise in reaction bulb under ice-water bath, heating reflux reaction 3h, and revolving removes solvent.Add 100mL
Distilled water, is extracted twice with 100mL ethyl acetate, merges organic phase, is washed 3 times with saturated common salt.Organic phase anhydrous slufuric acid
Sodium is dried, and revolving obtains crude product.With chromatography post separation, eluant, eluent is dichloromethane：Ethanol (20:1).Obtain the rosin derivative
Thing, is shown in Formulas I, yield 40%.
FTIR(KBr cm‐1):3423,2922,2858,1621,1549,1483,1450,1405,1250,1208,1155,
1088,1020,955,878,821,750,698,622,508.
1H NMR(400M CDCl3):δ(ppm)7.17‐7.14(m,4H),7.00‐6.97(m,4H),6.88‐6.85(m,
4H),3.58‐3.23(m,16H),3.04‐3.76(m,24H),2.35‐2.15(m,16H),1.85‐1.15(m,76H)。
Embodiment 2：The preparation of rosin derivative
(1) purification of dehydroabietic acid
220g industry disproportionated rosins are dissolved in 400mL absolute ethyl alcohols, heating water bath slowly instills 40mL to 75 DEG C, with dropper
Monoethanolamine, stirs 30min.400mL hot water is added, continues to stir 10min.Impurity is washed away with 160mL petroleum ethers, repeats extraction 3
Secondary, water layer, which is stood, solid precipitation, filters, and is dried at 60 DEG C, obtains dehydroabietic acid monoethanolamine.It is molten to measure 75% ethanol of 500mL
Liquid, is heated to 60 DEG C, adds dehydroabietic acid monoethanolamine, stirring and dissolving, is slowly added dropwise dilute hydrochloric acid to PH=4, filtering, with 50%
Ethanol solution is dried at recrystallizing 2 times, 60 DEG C, obtains dehydroabietic acid, yield 36%.
(2) acyl chloride reaction
6.0g dehydroabietic acids are dissolved in 50mL dichloromethane, add a drop n,N-Dimethylformamide as catalyst, frozen water
2.8g SOCl are slowly added dropwise under bath2, ice-water bath is removed, is heated to reflux 2h.Revolving removes solvent and excess SOCl2, obtain dehydrogenation fir
Isoxazolecarboxylic acid, yield 99%.
(3) Michael addition reactions
3.0g ethylenediamines are dissolved in 30mL methanol, add 36g methyl acrylates, react 24h at room temperature, revolving removes
Solvent and excessive methyl acrylate, obtain product G0.5, see Formula II, yield 98%.
(4) amidation process
10g G0.5 are dissolved in 50mL methanol, add 13g ethylenediamines, react at room temperature 72h, revolving removes solvent, uses
10mL toluene is azeotroped off unnecessary ethylenediamine, is repeated 3 times, and obtains G1.0, sees formula III, yield 100%.
(5) secondary amidation process
4.0g G1.0 are dissolved in 20mL dichloromethane, add 5.5g triethylamines.9.89g chloride dehydroabietics are taken to be dissolved in
20mL dichloromethane, is slowly added dropwise in reaction bulb under ice-water bath, heating reflux reaction 3h, and revolving removes solvent.Add 100mL
Distilled water, is extracted twice with 100mL ethyl acetate, merges organic phase, is washed 3 times with saturated common salt.Organic phase anhydrous slufuric acid
Sodium is dried, and revolving obtains crude product.With chromatography post separation, eluant, eluent is dichloromethane：Ethanol (25:1).Obtain the rosin derivative
Thing, is shown in Formulas I, yield 42%.
Embodiment 3：Paratonere 57:1 performance test
In paratonere 57:1 (Hangzhou Xin Kai Industrial Co., Ltd.s) adds in embodiment 1 pine being prepared after the completion of preparing
Fragrant derivative, dosage are respectively 0,1%, 2%, 3%, 5%, the 8% of pigment weight, are uniformly mixed, obtain pigment sample.
Above-mentioned pigment sample 0.500g (being accurate to 0.001g) is weighed, then weighs varnish 2.000g and (is accurate to
0.001g), pigment and varnish are placed on the glass of plain grinding instrument, are slurred with inking knife, add 8.00kg counterweights, 75 turns of grindings
Twice, mill base is obtained.
Pigment shade is tested
Take mill base to scrape sample, tested with colour photometer.
Pigment colour power is tested
2.000g (being accurate to 0.001g) chalk is weighed on a glass, then weighs 0.200g (being accurate to 0.001g) color
Slurry, is fully mixed well with inking knife, scrapes sample.Scale is tested with colour photometer.
Pigment rheology performance test
26 DEG C of temperature is kept, takes 1.1g mill bases to drop on the testboard of rheometer, 5 minutes testing times were set, start to examine
Survey.
Above-mentioned plain grinding instrument used is Guangxi Wuzhou Huachi chemical industry instrument plant PM240-II types, and colour photometer used is
DATACOLOR SF-450X, rheometer used are PHYSICA MCR 150, and properties testing result is shown in Table 1.Add this hair
The bright dispersant, to paratonere 57:1 coloured light does not influence, at the same can improve pigment offset printing ink system thixotroping and
Viscosity, slightly improves tinting strength, tinting power under identical grinding condition, reaches optimal effect when adding amount of pigment 2%.
1 paratonere 57 of table:1 performance
Embodiment 4：Pigment Yellow 12 performance test
The rosin that is prepared is added in embodiment 1 after the completion of pigment Yellow 12 (Hangzhou Xin Kai Industrial Co., Ltd.s) preparation
Derivative, dosage are respectively 0,1%, 2%, 3%, 5%, the 8% of pigment weight, are uniformly mixed, obtain pigment sample.
Above-mentioned pigment sample 0.500g (being accurate to 0.001g) is weighed, then weighs varnish 2.000g and (is accurate to
0.001g), pigment and varnish are placed on the glass of plain grinding instrument, are slurred with inking knife, add 8.00kg counterweights, 75 turns of grindings
Twice, mill base is obtained.
Pigment shade is tested
Take mill base to scrape sample, tested with colour photometer.
Pigment colour power is tested
2.000g (being accurate to 0.001g) chalk is weighed on a glass, then weighs 0.200g (being accurate to 0.001g) color
Slurry, is fully mixed well with inking knife, scrapes sample.Scale is tested with colour photometer.
Pigment rheology performance test
26 DEG C of temperature is kept, takes 1.1g mill bases to drop on the testboard of rheometer, 5 minutes testing times were set, start to examine
Survey.
Above-mentioned plain grinding instrument used is Guangxi Wuzhou Huachi chemical industry instrument plant PM240-II types, and colour photometer used is
DATACOLOR SF-450X, rheometer used are PHYSICA MCR 150, and properties testing result is shown in Table 2.Add this hair
The bright dispersant, does not influence the coloured light of pigment Yellow 12, while can improve pigment in the thixotroping of offset printing ink system and glue
Degree, slightly improves tinting strength, tinting power under identical grinding condition, reaches optimal effect when adding amount of pigment 2%.
The performance of 2 pigment Yellow 12 of table
Embodiment 5：Pigment blue 15:3 performance tests
In pigment blue 15:3 (Hangzhou Xin Kai Industrial Co., Ltd.s) add in embodiment 1 pine being prepared after the completion of preparing
Fragrant derivative, dosage are respectively 0,1%, 2%, 3%, the 5% of pigment weight, are uniformly mixed, obtain pigment sample.
Above-mentioned pigment sample 0.500g (being accurate to 0.001g) is weighed, then weighs varnish 2.000g and (is accurate to
0.001g), pigment and varnish are placed on the glass of plain grinding instrument, are slurred with inking knife, add 8.00kg counterweights, 75 turns of grindings
Twice, mill base is obtained.
Pigment shade is tested
Take mill base to scrape sample, tested with colour photometer.
Pigment colour power is tested
2.000g (being accurate to 0.001g) chalk is weighed on a glass, then weighs 0.200g (being accurate to 0.001g) color
Slurry, is fully mixed well with inking knife, scrapes sample.Scale is tested with colour photometer.
Pigment rheology performance test
26 DEG C of temperature is kept, takes 1.1g mill bases to drop on the testboard of rheometer, 5 minutes testing times were set, start to examine
Survey.
Above-mentioned plain grinding instrument used is Guangxi Wuzhou Huachi chemical industry instrument plant PM240-II types, and colour photometer used is
DATACOLOR SF-450X, rheometer used are PHYSICA MCR 150, and properties testing result is shown in Table 2.Add this hair
The bright dispersant, to pigment blue 15:3 coloured light does not influence, and can significantly improve thixotroping of the pigment in offset printing ink system,
Additive amount also slightly improves viscosity when few, while pigmenting power can be slightly improved under identical grinding condition, adds face
Reach optimal effect during doses 1%.
3 pigment blue 15 of table:3 performance
The present invention provides a kind of rosin derivative and its preparation method and application.Wherein rosin derivative is by rosin acid and tree
Dendritic oligomer reacts to obtain, and obtained rosin derivative can improve color lake class, diphenyl amine, phthalocyanine pigment in offset printing body
The rheological property of system, does not influence coloured light, while can improve the dispersion performance of organic pigment to a certain degree again.Therefore, the present invention carries
The rosin derivative of confession can be as the dispersant of organic pigment used for offset ink.
Claims (10)
1. a kind of rosin derivative, the rosin derivative is compound shown in Formulas I：
2. a kind of method for preparing rosin derivative described in claim 1, comprises the following steps：
(1) purification of dehydroabietic acid：Technical grade disproportionated rosin is dissolved in absolute ethyl alcohol, monoethanolamine is slowly added dropwise at 75 DEG C, stirs
Mix 30 minutes, add hot water and be stirred for 10 minutes；Impurity is washed away with low polar solvent, in triplicate, water layer has solid after standing
Separate out, filtering, dries at 60 DEG C, obtain dehydroabietic acid ethanolamine salt；Product is dissolved in 60 DEG C of 75% ethanol water, slowly
To pH=3-4, filtering, is recrystallized 2 times, is dried at 60 DEG C, obtain dehydrogenation fir the slow dilute hydrochloric acid that is added dropwise with 50% ethanol water
Acid product；
Wherein, the mass ratio of monoethanolamine and disproportionated rosin is 1:4-6；
The low polar solvent is n-hexane, normal heptane or petroleum ether；
The dilute hydrochloric acid concentration is 5-15%；
(2) chloride：Product obtained by step (1) is dissolved in dichloromethane, thionyl chloride is slowly added dropwise under ice-water bath, then add 1
Catalyst is dripped, when back flow reaction 2-4 is small, revolving removes solvent and excessive thionyl chloride, obtains chloride dehydroabietic；
Wherein, the molar ratio of thionyl chloride and dehydroabietic acid is 1.5-4:1；
The catalyst is N,N-dimethylformamide；
(3) Michael addition reactions：Ethylenediamine is dissolved in methanol, adds methyl acrylate, it is small to react 24-48 at room temperature
When, revolving removes solvent and excessive methyl acrylate, obtains product G0.5, sees Formula II：
Wherein, the mass ratio of ethylenediamine and methanol is 1:5-20；
The molar ratio of ethylenediamine and methyl acrylate is 1:6-10；
(4) amidation process：Product obtained by step (3) is dissolved in methanol, adds ethylenediamine, it is small to react 72-96 at room temperature
When, revolving removes solvent, adds azeotropic solvent and removes ethylenediamine, obtains product G1.0, see formula III：
Wherein, the mass ratio of G0.5 and methanol is 1:5-20；
The molar ratio of G0.5 and ethylenediamine is 1:6-10；
The azeotropic solvent is normal heptane or toluene；
(5) secondary amidation process：Product G1.0 is dissolved in dichloromethane, triethylamine is added, chloride dehydroabietic is dissolved in two
Chloromethanes, is slowly added dropwise in reaction bulb under ice-water bath, and when back flow reaction 3-5 is small, revolving removes solvent, adds distilled water to be used in combination
Ethyl acetate extracts 2 times, merges organic phase, with desiccant dryness, rotates to obtain crude product, with chromatography post separation, obtains the rosin
Derivative；
Wherein, the molar ratio of G1.0 and triethylamine is 1:1.4-2；
The eluant, eluent chromatographed used in post separation is dichloromethane:Ethanol=30-15:1.
A kind of 3. method for preparing rosin derivative described in claim 1 according to claim 2, wherein in step (2)
In, the molar ratio of thionyl chloride and dehydroabietic acid is 2-3:1.
A kind of 4. method for preparing rosin derivative described in claim 1 according to claim 2, wherein in step (3)
In, the molar ratio of ethylenediamine and methyl acrylate is 1:7-9.
A kind of 5. method for preparing rosin derivative described in claim 1 according to claim 2, wherein in step (4)
In, the molar ratio of G0.5 and ethylenediamine is 1:7-9.
A kind of 6. method for preparing rosin derivative described in claim 1 according to claim 2, wherein in step (5)
In, the molar ratio of G1.0 and triethylamine is 1:1.4-1.6.
A kind of 7. method for preparing rosin derivative described in claim 1 according to claim 2, wherein in step (5)
In, the drier is anhydrous sodium sulfate or anhydrous magnesium sulfate.
A kind of 8. method for preparing rosin derivative described in claim 1 according to claim 2, wherein in step (5)
In, the eluant, eluent used in the chromatography post separation is dichloromethane:Ethanol=25-20:1.
A kind of 9. purposes of the rosin derivative as organic pigment dispersant used for offset ink described in claim 1.
10. purposes of the rosin derivative according to claim 9 as the dispersant of organic pigment used for offset ink, wherein
The rosin derivative dosage is the 1-8% of pigment weight.
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| CN201611259652.2A CN106699593B (en) | 2016-12-30 | 2016-12-30 | A kind of rosin derivative and its preparation method and application |
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